docs: def find_elb(name='', env='', region=''):
      """Get an application's AWS elb dns name.
  
      Args:
          name (str): ELB name
          env (str): Environment/account of ELB
          region (str): AWS Region
  
      Returns:
          str: elb DNS record
  
      """
      LOG.info('Find %s ELB in %s [%s].', name, env, region)
  
      url = '{0}/applications/{1}/loadBalancers'.format(API_URL, name)
      response = requests.get(url, verify=GATE_CA_BUNDLE, cert=GATE_CLIENT_CERT)
      assert response.ok
  
      elb_dns = None
      accounts = response.json()
      for account in accounts:
          if account['account'] == env and account['region'] == region:
              elb_dns = account['dnsname']
              break
      else:
          raise SpinnakerElbNotFound('Elb for "{0}" in region {1} not found'.format(name, region))
  
      LOG.info('Found: %s', elb_dns)
      return elb_dns